A numerical study of the formation of magnetisation plateaus in quasi one-dimensional spin-1/2 Heisenberg models

被引：12

作者：

Wiessner, RM ^{[1
]}

Fledderjohann, A ^{[1
]}

Mütter, KH ^{[1
]}

Karbach, M ^{[1
]}

机构：

[1] Univ Wuppertal, Dept Phys, D-42097 Wuppertal, Germany

来源：

EUROPEAN PHYSICAL JOURNAL B | 2000年 / 15卷 / 03期

关键词：

D O I：

10.1007/s100510051149

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We study the magnetisation process of the one-dimensional spin-1/2 antiferromagnetic Heisenberg model with modulated couplings over j = 1, 2, 3 sites. It turns out that the evolution of magnetisation plateaus depends on j and on the wave number q of the modulation according to the rule of Oshikawa ct al. A mapping of two- and three-leg zig-zag ladders on one-dimensional systems with modulated couplings yields predictions for the occurrence of magnetization plateaus. The latter are tested by numerical computations with the DMRG algorithm.

引用

页码：475 / 481

页数：7

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